/* public/assets/app.css */
/* Simulive 后台 — 通用样式 */
/* 设计原则: 信息密度高, 状态反馈清晰, 0 装饰多余动效 */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #fafaf7;
  --panel: #ffffff;
  --panel-2: #f4f4ef;
  --border: #e6e4dc;
  --border-strong: #d4d2c8;
  --text: #1a1a17;
  --text-2: #5b5b54;
  --text-3: #8a8a82;
  --accent: #1a1a17;
  --live: #16a34a;
  --live-bg: #dcfce7;
  --warn: #d97706;
  --warn-bg: #fef3c7;
  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --sidebar-bg: #0f1115;
  --sidebar-text: #c9c9c2;
  --sidebar-text-active: #ffffff;
  --sidebar-hover: #1c1f26;
  --radius: 6px;
  --shadow-sm: 0 1px 0 rgba(0,0,0,.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,.06);
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --sans: 'Plus Jakarta Sans', system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* ─── Layout ───────────────────────────── */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px; flex-shrink: 0;
  background: var(--sidebar-bg); color: var(--sidebar-text);
  display: flex; flex-direction: column;
}
.sidebar-brand {
  padding: 22px 20px 18px;
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--sidebar-text-active);
  border-bottom: 1px solid #1c1f26;
}
.sidebar-brand .dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--live); margin-right: 8px; vertical-align: middle; }
.sidebar nav { padding: 12px 8px; flex: 1; }
.sidebar nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; margin: 2px 0;
  border-radius: var(--radius);
  font-size: 13.5px;
  transition: background .12s;
}
.sidebar nav a:hover { background: var(--sidebar-hover); color: var(--sidebar-text-active); }
.sidebar nav a.active { background: var(--sidebar-hover); color: var(--sidebar-text-active); }
.sidebar nav a .ico { width: 16px; height: 16px; opacity: .85; }
.sidebar-foot { padding: 14px 16px; border-top: 1px solid #1c1f26; font-size: 12px; color: var(--text-3); }
.sidebar-foot .user { color: var(--sidebar-text-active); font-family: var(--mono); }
.sidebar-foot button { margin-top: 8px; background: transparent; color: var(--text-3); border: 1px solid #1c1f26; padding: 5px 10px; border-radius: 4px; cursor: pointer; font-size: 11.5px; }
.sidebar-foot button:hover { color: var(--sidebar-text-active); border-color: #2a2e38; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  height: 56px; padding: 0 24px;
  background: var(--panel); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.topbar h1 { font-size: 16px; font-weight: 600; margin: 0; letter-spacing: -0.01em; }
.topbar .breadcrumb { color: var(--text-3); font-size: 12.5px; margin-top: 2px; font-family: var(--mono); }
.content { padding: 24px; flex: 1; overflow: auto; }

/* ─── Cards ───────────────────────────── */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.card-header {
  padding: 14px 18px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13.5px; font-weight: 600;
}
.card-header .sub { font-size: 12px; color: var(--text-3); font-weight: 400; font-family: var(--mono); }
.card-body { padding: 18px; }
.card-body.tight { padding: 0; }

/* ─── Buttons ───────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: var(--panel); color: var(--text);
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: background .12s, border-color .12s, transform .04s;
}
.btn:hover { background: var(--panel-2); border-color: var(--text-3); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.primary:hover { background: #000; }
.btn.live { background: var(--live); color: #fff; border-color: var(--live); }
.btn.live:hover { background: #15803d; }
.btn.danger { color: var(--danger); border-color: var(--danger); background: transparent; }
.btn.danger:hover { background: var(--danger-bg); }
.btn.sm { padding: 4px 10px; font-size: 12px; }
.btn.icon { padding: 6px 8px; }

/* ─── Tables ───────────────────────────── */
table.tbl {
  width: 100%; border-collapse: collapse; font-size: 13px;
}
table.tbl th {
  text-align: left; padding: 10px 14px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--border);
  font-weight: 600; color: var(--text-2);
  font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.04em;
}
table.tbl td {
  padding: 12px 14px; border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table.tbl tr:last-child td { border-bottom: none; }
table.tbl tr:hover td { background: #fbfaf3; }
table.tbl td.mono { font-family: var(--mono); font-size: 12.5px; }

/* ─── Forms ───────────────────────────── */
.form-row { display: flex; flex-direction: column; gap: 4px; margin-bottom: 14px; }
.form-row label { font-size: 12px; color: var(--text-2); font-weight: 500; }
.form-row .hint { font-size: 11.5px; color: var(--text-3); margin-top: 2px; }
input[type="text"], input[type="password"], input[type="number"], input[type="datetime-local"],
input[type="url"], input[type="email"], select, textarea {
  padding: 8px 11px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--panel);
  font-size: 13px;
  font-family: inherit;
  color: var(--text);
  width: 100%;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--text); }
textarea { min-height: 80px; resize: vertical; font-family: var(--mono); }

/* ─── Badges ───────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 8px; border-radius: 4px;
  font-size: 11.5px; font-weight: 500;
  font-family: var(--mono);
}
.badge.live { background: var(--live-bg); color: var(--live); }
.badge.live::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--live); animation: pulse 1.4s infinite; }
.badge.idle { background: var(--panel-2); color: var(--text-3); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.err { background: var(--danger-bg); color: var(--danger); }

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .4; } }

/* ─── Grid utilities ───────────────────── */
.grid { display: grid; gap: 16px; }
.grid.col-2 { grid-template-columns: repeat(2, 1fr); }
.grid.col-3 { grid-template-columns: repeat(3, 1fr); }
.grid.col-4 { grid-template-columns: repeat(4, 1fr); }

/* ─── Stat tiles (dashboard) ────────────── */
.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.stat .label { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-3); font-weight: 500; }
.stat .value { font-size: 32px; font-family: var(--mono); font-weight: 600; margin-top: 6px; letter-spacing: -0.02em; }
.stat .value .unit { font-size: 14px; color: var(--text-3); font-weight: 400; margin-left: 4px; }
.stat .delta { font-size: 11.5px; color: var(--text-3); margin-top: 4px; font-family: var(--mono); }

/* ─── Modal ───────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(15, 17, 21, .35);
  display: none; align-items: center; justify-content: center;
  z-index: 100;
}
.modal-backdrop.show { display: flex; }
.modal {
  background: var(--panel); border-radius: 8px;
  width: 100%; max-width: 480px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-header h2 { margin: 0; font-size: 15px; font-weight: 600; }
.modal-header .close { background: none; border: none; cursor: pointer; font-size: 18px; color: var(--text-3); padding: 0; line-height: 1; }
.modal-body { padding: 20px; max-height: 70vh; overflow: auto; }
.modal-footer { padding: 12px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; background: var(--panel-2); }

/* ─── Toast ───────────────────────────── */
#toast-stack { position: fixed; top: 24px; right: 24px; display: flex; flex-direction: column; gap: 8px; z-index: 200; pointer-events: none; }
.toast {
  background: var(--text); color: #fff;
  padding: 10px 16px; border-radius: var(--radius);
  font-size: 13px; box-shadow: var(--shadow-md);
  pointer-events: auto;
  animation: toast-in .15s ease-out;
}
.toast.err { background: var(--danger); }
.toast.ok { background: var(--live); }
@keyframes toast-in { from { transform: translateY(-8px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ─── Misc ───────────────────────────── */
.muted { color: var(--text-3); }
.row { display: flex; align-items: center; gap: 10px; }
.row.between { justify-content: space-between; }
.row.wrap { flex-wrap: wrap; }
.gap-tight { gap: 4px; }
.empty-state { padding: 40px 20px; text-align: center; color: var(--text-3); font-size: 13px; }

/* ─── Login page ───────────────────────── */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at 30% 20%, #f4f4ef 0%, var(--bg) 50%);
}
.login-card {
  width: 360px; padding: 36px 32px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; box-shadow: var(--shadow-md);
}
.login-card h1 { font-family: var(--mono); font-size: 20px; margin: 0 0 4px; letter-spacing: -0.02em; }
.login-card .sub { color: var(--text-3); font-size: 12.5px; margin-bottom: 24px; }

/* ─── Timeline editor ──────────────────── */
.timeline-wrap { background: var(--panel-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.timeline {
  position: relative; height: 64px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  cursor: crosshair; overflow: hidden;
}
.timeline .ruler {
  position: absolute; top: 0; left: 0; right: 0; height: 18px;
  background: var(--panel-2); border-bottom: 1px solid var(--border);
  font-family: var(--mono); font-size: 10px; color: var(--text-3);
}
.timeline .ruler span { position: absolute; top: 3px; transform: translateX(-50%); }
.timeline .marker {
  position: absolute; top: 18px; bottom: 0; width: 2px;
  background: var(--accent); cursor: pointer;
}
.timeline .marker:hover { background: var(--live); width: 3px; }
.timeline .marker.cta { background: var(--warn); }
.timeline .playhead { position: absolute; top: 0; bottom: 0; width: 2px; background: var(--danger); pointer-events: none; }